Two-stroke internal combustion engine with a spherical chamber
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United States of America Patent
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Oct 22, 2019
Grant Date -
Jun 23, 2016
app pub date -
Jul 2, 2014
filing date -
Jul 4, 2013
priority date (Note) -
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Abstract
An internal combustion heat engine, of which the architecture of one elementary “cylinder” includes 4 identical mobile couplings distributed about the Z axis of the engine, consisting of a segmented “piston” driven by the crank pin of a crankshaft and guided by a roller rolling in a slide. The crankshafts, which are parallel and synchronized by a gear mechanism, perform one revolution per cycle. Each piston includes a sliding surface that nearly touches the cylinder face of the adjacent piston, but on which the segmentation slides in sealed contact. The concave shape of the 4 overlapping faces encloses a chamber volume that changes cyclically: at a minimum, having a quasi-spherical shape during combustion, reducing the heat losses at the walls, and at a maximum, uncovering the ports allowing intake and exhaust via transfer units and manifolds with the possibility of more economical Miller/Atkinson distribution, via rotary plates.
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